Improvement in stump-exteaotoes



@auch tstrs germi @ffice ISAAC PARDEE, OF VINELAND, NEW JERSEY, AND E.C. PARVIN, OF FOREST GROVE, NEW JERSEY, ASSIGN ORS TO R. C. PARVIN.

Letters Patent No. 65,263, dated Jll'ag/ 28,1867.

IMPROVEMENT IN STUMP-BXTRAGTORS.

TO ALL WHOM IT MAY OONCERN:

Be it known that we, ISA/rc PARDEE, of Vineland, in the county ofCumberland, and in the State of New Jersey, and R. C. PARVXN, of ForestGrove, in the county oi' Gloucester, and said State of' New Jersey, haveinvented a new and improved Stump-Extractor; and we do hereby declarethat the following is a full, clear, and exact description thereof,which will enable others skilled in the art to make and use the same,reference being had to the accompanying drawings, forming a part of thisspecification.

y This invention relates to a new and improved machine for extractingstumps, elevating stone, and lifting or raising other heavy bodies.

The invention consists of two rack-bars, tted in a socket provided withpawls, and placed loosely upon a suitable framing, the rack-bars havinga lever attached to their lower ends, and all arranged as hereinafter`fully shown and described, whereby a very simple, economical, andellicientdeviee for the purpose specified is obtained-one not liable toget out of repair or have its working parts deranged by use. In ltheaccompanying sheet of drawings- Figure 1 is a side view of ourinvention.

Figure 2, a vertical section ofthe same, taken in the line x x, fig. 1.

Similar letters of reference indicate like parts.

A represents a framing composed of a horizontal bed-piece, B, supportedby inclined bars C, two at each side, the lower ends of said bars beingattached to bases or sills D, or to a truckY when the raised articlesare to be transported from the places where they were raised. Erepresents a socket, whih may be ci" cast iron. This socket has arounded or semi-cylindrical bottom, which is fitted and works in acorresponding-shaped recess made in the upper surface of the bed-pieceB, as shown clearly in fig. 2. F F represent two rack-bars, which passup loosely through `the socket E, and have pawls Gr G engaging withthem. These pawls rest on ledge, a, within the socket, and have theirlower ends rounded, as shown at I), in fig. 2, which rounded edges givethe upper ends of the pawls a tendency to keep engaged with the teetlrofthe rack-bars. This will be fully understood by referring to fig. 2, inwhich it will bc seen that the lower ends of the pawls are rounded attheir inner sides, and consequently deprived of a support which wouldhavea tendency to keep them upright. By this arrangement springs whichare usually employed in connection with pawls are avoided. In order todisengagc the pawls from the rack-bars, each pawl has a cord or smallwire, c, attached, and these cords or wires pass through holes in theside ot' the socket so that they may be readily grasped when necessary.The lower ends of the rack-bars F F are connected by pivots d d to ametal lever, H, the ends of which have loops e attached to receivewooden handles I I. 'lhe handles, it will be seen, are simply anextension of the lever, and

, to the centre of the latter, at a point a trii'le below, but in a linemidway between thc pivot-s del, which attach the rack-bars to the lever,there is secured a pendent bail, J, in which a ring, K, is placed. Thisring K has two bars, L M, fitted or placed upon it, the bar L having aneye or holc,f, made in it near its lower end, and the other bar, M,having a rod, N, secured to it by a pivot, (g, sec iig. 1.)

The operation is'as follows: If a stump is to bc extracted the chain isadjusted around it, and the rod N of the bar M passed through a link,I1, thereof, and then through the eycf of thc bar L, (sec fig. 1.) Thelever H is then operated, worked up and. down by a man at each handle I;and thc rack-bars F F raised alternately the distance of one tooth, thepivots cl d serving as fulcra alternately, and the pawls G serving tohohl the rack-bars.

It will be seen that by this simple arrangement a powerful leverage isobtained, andin consequence of the socket E being looscon the bed-pieceB, and rounded atits bottom, the former is allowed to turn and adjustitself` to-conforrn to the line or position the chain will assumo underthe pull of the rack-bars. The bars C may have handles O att-ached forthe convenience of carrying the machine or adjusting it in' position,and the machine, in cases where it is desired to carry .or transport theelevated article from the pla-cc where it was clevated or raised, may beplaced on a. truck.

Having thus described our invention, what we claim as new, and desire tosecure by Letters latent, is-

The pawls G Gr, resting upon the ledge a of the socket E, withtheirlower inner corners rounded, as shown at b, so that their upper endswill fall by their own gravity against the ratchet-bars F, and engagetherewith, when constructed and arranged as herein shown and described.

ISAAC lAltDEE, 1i.. PATH/IN.

Witnesses:

A. B. Hoven, WM. G. SMITH.

